Payame Noor University Economic Growth and Development Research 2228-5954 7 28 2017 09 23 An Investigation of Energy Consumption, Economic Growth and CO2 Emission in the Iranian Economic Sectors An Investigation of Energy Consumption, Economic Growth and CO2 Emission in the Iranian Economic Sectors 51 70 2901 FA Rouhollah Shahnazi Assistant Professor of Economics, Shiraz University, Shiraz, Iran Ebrahim Hadian M.A. in Economics, Shiraz University, Shiraz, Iran Lotfollah Jargani M.A. in Economics, Shiraz University, Shiraz, Iran Journal Article 2016 04 07 Although the trend of increase in energy consumption has made possible fast economic growth of industrial modern society, but because of combustion pollutants emission and increase in density of carbon dioxide in atmosphere has made irreversible changes in the world. Not only this trend is destroying finite and nonrenewable energies, but also it is releasing numerous of pollutants into the receptive environment (air, water, and soil). <br />In this article, existence of causality relation between energy carriers' consumption with economic growth and carbon dioxide gas emission in sectors of Iran's economy (residential, general and commercial, industry, agriculture, and transportation) in period of 1997 to 2012 using causality Toda and Yamamoto method has been studied. <br />In the agriculture sector, results show a unidirectional causality relation of energy carrier consumption to economic growth. In transportation, residential, general and economic sectors existence of bidirectional causality relation of economic growth variable and carbon dioxide gas emission with energy carriers has been verified. In industry sector, a unidirectional causality relation of economic growth to gas, electricity to economic growth and bidirectional causality relation of coal exist. Also, there is a unidirectional causality relation of carbon dioxide emission to oil and bidirectional causality relation carbon dioxide gas emission to other variables except oil exist. Although the trend of increase in energy consumption has made possible fast economic growth of industrial modern society, but because of combustion pollutants emission and increase in density of carbon dioxide in atmosphere has made irreversible changes in the world. Not only this trend is destroying finite and nonrenewable energies, but also it is releasing numerous of pollutants into the receptive environment (air, water, and soil). <br />In this article, existence of causality relation between energy carriers' consumption with economic growth and carbon dioxide gas emission in sectors of Iran's economy (residential, general and commercial, industry, agriculture, and transportation) in period of 1997 to 2012 using causality Toda and Yamamoto method has been studied. <br />In the agriculture sector, results show a unidirectional causality relation of energy carrier consumption to economic growth. In transportation, residential, general and economic sectors existence of bidirectional causality relation of economic growth variable and carbon dioxide gas emission with energy carriers has been verified. In industry sector, a unidirectional causality relation of economic growth to gas, electricity to economic growth and bidirectional causality relation of coal exist. Also, there is a unidirectional causality relation of carbon dioxide emission to oil and bidirectional causality relation carbon dioxide gas emission to other variables except oil exist. https://egdr.journals.pnu.ac.ir/article_2901_ef7c5857636223e7fecd2e80592c0e0f.pdf